Bolxget  separator



(No Model.)

N N J. BERNSTRO-M.

CRANK CONNECTION FOR GENTRIPUGAL SEPARATORS.

N0.'489,140. Patented Jan. 3, 1893.

.z 7 v I J I/ f N N f 'QQN 1b all whom it may concern:

' UNITED STATES} JOHN BERNS'IRGM, OF STOCKHOLM, SWEDEN, ASSIGNOR TO PATENT OFFrcE.

lnn AK-TIE- BOLAGETSEPARATOR, OF SAME lLACE.

srncmcanou forming m f Letter; s... No. 489,140, emu ne 3,1893.

Application ma September 29. mo. Burial in. seem. no an.)

Be it known that I, JOHNBERNSTB M, a'subject of the King of Sweden and Norway, and a resident of Stockholm, in. the Kingdom of Sweden, have invented certain newand useful Improvements in Crank Connections for Driving Mechanisms of Centrifugal Separators, of which the following is a specification.

This invention relates to that class of cen trifngal creamers or separators which areog' erated by hand or by-animal power and has for its object to provide means for maintaining a uniform speed and to prevent rotation of the bowl in the wrong direction and to prevent breakage by the sudden stoppage of the driving crank or pulley.

In the accompanying drawings, Figure 1 is a sectional. elevation of a centrifugal creamer operated by hand and provided with my im provements. Fig. 2 is a sectional elevation of the hand crack on anenlarged scale. Fig. 3 is a cross section in line ac--w, Fig. 2. Fig. 4 is a sectional elevation of a pulley provided with my improved ratchet mechanism and applied to the separator when it is operated by animalpower.

Like letters of reference refer to like parts in the several figures.

A represents the frame of the machine, 13 the separating bowl, I) the spindle thereof pro- -vided with a worm c, d the countershaft providcd'with a worm wheel D which meshes with the worm d, e a pinion and f the driving shaft provided with a gear wheel F which meshes with the pinion c. All of these parts may be of any suitable or well known construction.

. G represents the hand crank which is loosely mounted upon the reduced end f of the drivrepresents a'bolt arranged in a cavity formed in the crank parallel with the axis of .thedriving shaft and-2' is a spring arranged in the cavity behind the bolt and pressing the latter outwardly so that it projects from the face of the crank. J represents a washer secured to theend of the shaft by a cross pin 3' and arranged against the faceof the crank. 70

represents an inclined semi-circular groove formed in the face of the washer adjacent -to the crank and provided at one end with an abrupt shoulder 1 while it runsout to nothing atthe other end. The end of the spring bolt engages in this groove against the abrupt O Y the proper direction and causes the shaft to shoulder when the hand .crank is turned in be rotated. When ,the hand crank is turned in the wrong direction,- the spring bolt is tum and relieves the hand crank from the pressure. This lack of pressure and the click of the spring bolt riding over the inclined groove in the washer, indicates to the operator that the speed of the hand crank is be? low the normal and enables him to maintain a uniform speed which is of the greatest importance in obtaining satisfactory results .from a hand separator.

to adriving' pulley by which the driving shaft is rotated and which is set in motion by ani- When the speed of the mal or other power. shaft from which the pulley is rotated or the speed of the hand crank is suddenly reduced or stopped, the speed of the bowl is not sud denly checked, but the bowl continues to rotate and its speed is retarded only by the slight resistance which the shaft encounters in rotating in the slowly rotating or stationary crank or pulley.

The spring bolt is preferably made of such purpose it is very suitable as it is easilv replaced.

I claim'as'my invention The combination with the driving shaft,of a driving device loosel mounted on the shaft,

a spring bolt arrange in the driving device In testimony that I claim the for g ing as myinventionlhzive signed myh iml, inlnfufi- QHCQ of two Witnesses, this 5 th day 0i S01 ihe flat outer face if the driving device, and a washersecurcd to the outer end ef-thejshai'l;

parallel with thc shaft nmlprojecting hcypml and constructed with {1; fia tirmcf-fzico fitted.

tembc'r, 1&0. against the [Eat outer face of the driving; clo- *1 I 1 r U 1 i a .O'IL LliSliLlL V106 and having in its flat nner facea -c0nv N V \Vitnesses: gages and which recedes ffom the [lat face to 1 1., HAASE,

centric groove in which the spring blt (m- I I K. F. 'LUNM an abrupt should 01, S11 bstan tiz ily as set fox flh 

